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Finding the Fourth Proportional to 603,165.80, 903,711.90 and 392,695.40

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Solution

The fourth proportional to 603,165.80, 903,711.90 and 392,695.40 is: 588,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,165.80 : 903,711.90 = 392,695.40 : x
  2. Step 2: Convert to fraction form
    603,165.80/903,711.90 = 392,695.40/x
  3. Step 3: Cross multiply
    603,165.80x = 903,711.90 × 392,695.40
  4. Step 4: Simplify right side
    603,165.80x = 354,883,506,055.26
  5. Step 5: Solve for x
    x = 354,883,506,055.26/603,165.80
  6. Step 6: Final answer
    x = 588,368.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.